JPS624619A - Bearing device on car body side of spring leg or spring shock absorber of automobile - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention has a support that is applied from below to a vehicle body or a vehicle body component and is screwed to the vehicle body or a vehicle body component, and the support includes: This invention relates to a vehicle body side support device for a spring leg or spring shock absorber of an automobile, in which the spring leg or spring shock absorber is supported in the axial direction with a rubber elastic member interposed therebetween.

Prior Art A bearing device of the above type is disclosed in German Patent Application No. 2435723 or 2613982 or 2745.
No. 380.

Such a bearing device, on the one hand, absorbs or at least reduces the transmission of vibrations in the vehicle compartment caused by road impacts, etc., and on the other hand, ensures precise and defined wheel guidance. It must be configured as follows.

Furthermore, it is increasingly desirable to mechanize or automate at least a portion of vehicle assembly, especially final assembly. Therefore, a vehicle body-side support device is already known (German Patent No. 30 41 985) which is suitable for the automated assembly of a spring leg, in which case between the vehicle body and the end of the spring leg, An inner thin plate tip connected to the gusset rod, an outer thin plate tip connected to the vehicle body, and a rubber particularly subjected to shear stress which is pressed to adhere between the inner and outer thin plate tips. A rubber/metal support having a member is disposed. In the case of this spring leg bearing, the outer lamella tip, which is preferably wedge-shaped or tapered upwards, is inserted into the vehicle body from below during assembly, adapted to the dimensions of the outer lamella tip. The device is inserted into a bearing receptacle of a vehicle body shaped as such and is received in a form-fitting manner in the compressed elastic direction and at right angles to this direction. In this case, the outer sheet-metal tip is only held in the bearing receptacle in the elastic direction by a frictional connection and is not screwed to the vehicle body.

In this known type of arrangement, the spring leg or spring damper (usually as part of a pre-assembled axle unit) is suspended manually or automatically from below during vehicle assembly into the associated bearing receptacle of the vehicle body. inserted. Immediately after inserting the spring leg into the vehicle body, an upper catch-piece is screwed onto the end of the piston rod passing through the bearing receptacle in a known manner to ensure that it is guided into the vehicle body. A fixed spring leg or a preassembled axle unit can no longer fall out of the suspended vehicle body. On the other hand, in the downhill condition or during normal driving, the catch points are of little importance. This is because in this case the rubber-metal bearing of the spring leg is held in the associated bearing receptacle only by means of a frictional connection. This known arrangement is only applicable if the coil spring is supported on the vehicle body side via a rock rod.

Another known body-side support device (DE 33 02 057) suitable for automatically assembling spring legs or spring dampers also has a structure in which the upper spring end is not directly , it is only used when it is indirectly supported by the vehicle body via the piston rod. In the case of this known bearing device, the body recess for receiving the elastomeric bearing of the end of the piston rod is located in the first
a first support trough extending downwardly from the central constriction for supporting the rubber elastic body; and a second support trough extending upwardly from the constriction for supporting the second rubber elastic body. It is designed as a double-conical bearing receptacle with a bearing trough. In this case, the rubber-elastic bearing is such that the upper second rubber elastic body, which has been previously mounted on the piston rod, passes through the contracted part of the car body notch from below together with the piston rod during assembly. The piston rod is configured to be inserted into the second bearing trough and is thus supported in the piston rod end region. With this arrangement, the washer conventionally arranged at the end of the upper piston rod must be installed only after the suspension assembly has been completed and the vehicle has been lowered onto the road. This means that with this known arrangement, a pre-assembled shaft unit freely suspended on the vehicle body can be obtained by means of the upper second rubber elastic body.

The elastomeric bearing is designed in such a way that the upper elastomeric body of both elastomeric bodies must be designed and arranged in such a way that it is inserted from below into the double conical vehicle body/support receptacle during assembly. subject to some structural limitations.

Problem to be Solved by the Invention The object of the invention is, on the one hand, to maintain the elastic and damping properties of the spring legs or spring legs without any screwing or securing operations during suspension assembly. It is possible to automatically assemble axles with shock absorbers or spring legs or spring shock absorbers and, on the other hand, is also used in particular in the case of spring legs or spring shock absorbers with spring elements that are supported directly on the vehicle body. The object of the present invention is to provide a vehicle body-side support device of the type mentioned at the outset.

Means for Solving the Problems According to the invention, the object is achieved by the following steps: a) The support body is constructed as a thin plate tip which is at least approximately rotationally symmetrical and open on the side of the vehicle body; The bottom part is attached to the piston rod with a rubber elastic member interposed therebetween, and the upper edge of the thin plate tip-shaped body bent outward into a seven-flange shape is screwed to the vehicle body, and b a) the sheet-metal tip has at its end facing the vehicle bodywork uniformly distributed and circularly arranged retaining projections, and C) a component which is fixedly connected to or with the vehicle bodywork; d) The holding protrusion and the corresponding protrusion are arranged in such a way that the spatial arrangement and dimensional relationship of the retaining protrusion and the corresponding protrusion are appropriately selected to form a thin plate tip-like body on one side. During assembly, the retaining projection and the corresponding projection are pressed elastically in the radial direction so that they can be moved axially towards the vehicle body until the edges of the thin plate tips come into contact with the vehicle body and are engaged with each other. The axial holding force of the projections is such that the pre-assembled sheet-metal tip can be freely suspended on the vehicle body in the form of a component unit together with the spring legs or spring dampers and, if appropriate, other components of the wheel suspension system. and on the other hand, the sheet metal tip is constructed in such a way that it can be removed axially from the vehicle body again by rotating relative to the vehicle body for removal. It was resolved by

Advantageous embodiments of the invention are described in the subclaims.

Advantages of the Invention In the present invention, the upper end of the preassembled spring leg or spring damper as well as the fixing point on the vehicle body side are connected together by the complete spring leg being inserted from below into a cutout on the vehicle body side and snap-fitted there. The device is configured to be locked in a fixed manner.

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1, 6 and 4 show the upper end of a conventional spring leg which is pivotally connected to the only schematically illustrated body 1 of a motor vehicle, this spring leg being a telescopic leg. It consists of a scope-type shock absorber and a coil spring 3 concentrically surrounding it and used as a vehicle cushion/mechanism. For telescopic shock absorbers, only the upper end of the shock absorber wrist/rod is shown.

Two rubber elastic members 5 and 6 are provided at the upper end of the piston rod 4.
is inserted, and the support 7 is fixed, and this support 7
is applied from below to the vehicle body 1 or to a component of the vehicle body and is releasably connected to the vehicle body or component of the vehicle via a screw 8, which is shown only schematically.

With respect to its main shape, the carrier 7 is designed as a rotationally symmetrical sheet-metal tip open on the vehicle body side. The bottom part 10 of the thin plate tip-shaped body, which is provided with a central through hole 9 for the e-ston rod 4, is screwed to the piston rod 4 with two rubber elastic members 5 and 6 interposed therebetween. The elastic member contacts the bottom 10 from below and the other rubber elastic member from above.

On the vehicle body side, the thin plate tip-shaped body has an upper edge 11 which is bent outward in a 7-shaped configuration, and this edge is applied directly to the vehicle body 1 and is screwed to the vehicle body. has been done.

At the end of the thin plate tip 7 facing the vehicle body 1, circular and evenly distributed holding projections 12 are arranged,
Correspondingly circular and uniformly distributed corresponding projections 13 are provided on the vehicle body 1 or on components fixedly connected to the vehicle body to cooperate with the retaining projections. In this case, the retaining projection and the corresponding projection are arranged until the edge 11 of the thin plate tip comes into contact with the thin plate tip during vehicle assembly.
It is pushed into the vehicle body 1 from below, in which case the retaining projection and the corresponding projection are pressed spring-elastically in the radial direction. The pre-assembled spring foot or spring damper with the tab, in particular the sheet-metal tip 7, is pushed towards the vehicle body from below and is locked there.

In this case, the retaining projection 12 and the corresponding projection 13 form a component unit together with the spring foot or spring damper 2 and possibly other components of the wheel suspension, such that the axial holding force of these projections in relation to one another forms a component. The design is such that it is sufficient to freely suspend a pre-assembled sheet metal tip on the vehicle body 1.

Due to the above-described structure of the support device of the spring leg 2 on the vehicle body side, the spring leg together with the axle mounted on the spring leg can be automatically assembled to the vehicle upper structure, i.e., the vehicle body, in the case of an assembly process using an overhead conveyor system, for example. The preassembled component (as well as the further components) can then be inserted into the vehicle body from below and locked only there. Final assembly of spring legs,
That is, the final fastening of the thin plate tip to the vehicle body using the screws 8 requires that the vehicle be lowered onto the floor (on its own wheels) after assembly on an overhead conveyor-type assembly line. Occasionally, it will be done.

Since it is sometimes necessary to remove the spring legs or spring dampers in the event of defects over time, i.e. to separate them from the vehicle body, the retaining projections 12 and the corresponding projections 13 are created by these projections. The axial locking action in the form of a bayonet connection is released by disengaging the screw 8' to remove the spring leg and by rotating the sheet metal tip and the vehicle body relative to each other, so that the spring leg 2 can be removed. It is arranged so that it can be removed downward.

In the embodiments shown in FIGS. 1 and 6, a rotationally symmetrical assembly sleeve 14 made of thin plate is fixed to the vehicle body 1, for example by welding, and this assembly sleeve 14 projects into the interior of the thin plate tip 7 in the axial direction. are doing. Assembly sleeve 14
In the lower edge region of the sleeve, that is to say in the region of the edge that protrudes into the sheet-metal tip, a number of corresponding projections 13 are arranged, for example by suitable extrusion of the assembled sleeve, evenly distributed along the outer circumference of the sleeve.

In a corresponding manner, the same number of retaining projections 12 are arranged in the upper region of the sheet-metal tip 7, which are likewise evenly distributed along the inner circumference of the sheet-metal tip. As is clear from FIGS. 1 and 6, the holding protrusion 12 and the corresponding protrusion 13 are
When the thin plate tips 7 are pushed toward the vehicle body 1 from below until the edges 11 come into contact, they are locked together.

In the exemplary embodiment shown in FIG. 2, four retaining projections 12 offset by 90 degrees with respect to one another and corresponding projections 13 correspondingly offset by 90 degrees with respect to one another are provided. Naturally, the number of protrusions can also be varied. Furthermore, as shown in dashed lines in FIG. 2, after the screw 8 has been released and the thin plate tip 7 has been rotated relative to the vehicle body 1 and thus to the assembly sleeve 14, the retaining projection is in the predetermined position 12a. At this position 12a, the axial locking action between the holding protrusion and the corresponding protrusion is released.

In the embodiment according to FIG. 1, the edge 11 of the sheet-metal tip bent outwards is designed as an upper spring plate for the helical spring 3, so that the helical spring 3 is connected to the piston rod 4. The coil spring 3 is supported directly on the vehicle body 1 by inserting a normal rubber-elastic support member 15 regardless, whereas in the embodiment shown in FIG. The lower rubber elastic member 6 is supported by a spring plate 16 . In the embodiment shown in FIG. 6, the bottom of the lamella tip 7 is formed only by a constriction 10a of the lamella tip. Naturally, even in such an arrangement, the thin plate tips can be configured as shown in FIG. 1, and in addition, in the embodiment of FIG. 1, the thin plate tips shown in FIG. It is also possible to use a type of thin plate tip.

In the embodiment according to FIG. 4, the retaining projection 12 is not molded directly on the sheet-metal tip 7, but on the plastic cap 1T, which is preferably made of fiber-reinforced plastic. The plastic cap 17 is attached to the end of the thin plate tip 7 facing the vehicle body 1 and covers the inside of the thin plate tip. As shown in particular in detail in FIG. 5, the plastic cap is of frusto-conical construction and
Clip-like retaining projections 12 with radially outwardly directed retaining projections 18 are molded into the head of the plastic cap and are evenly distributed along the collar. Clip-shaped fixing protrusions 19 are integrally molded on the legs of the frusto-conical plastic cap and are uniformly distributed circumferentially along the bottom circle, and the fixing protrusions 19 are oriented outward in the radial direction. The retaining projection engages behind a radially inwardly projecting annular flange 20 of the sheet metal tip.

The plastic cap 17 is preferably preassembled with a spring leg or spring damper, ie with a thin plate tip 7.
is screwed onto the upper end of the piston rod 4 and then snap-fitted into the thin plate-shaped body. The fixing lug 19, like the retaining lug 12 and the corresponding lug 13, has an axial holding force that is slightly smaller than the fixing lug when the spring leg is fixed to the spring leg during assembly on an overhead conveyor assembly line. so that it can be freely suspended with another shaft part.
must be designed.

In FIGS. 1 and 3, the holding protrusion 1 of the thin plate tip 7 is shown.
The corresponding protrusion 13 cooperating with 2 is molded on the assembly sleeve 14 which projects into the interior of the sheet-metal tip.
In the embodiment according to FIG. 4, the corresponding projection 13 is designed as a radially projecting spring tongue in a body recess 21 arranged concentrically with respect to the piston rod 4. Only one is shown in FIG. In this case, the body recess 21 is adapted to the contour of the plastic cap 17 and likewise has an approximately frustoconical design, as is clear from FIG.

In this embodiment, the corresponding projections on the vehicle body side as well as the holding projections 12 on the thin plate tip or plastic cap are used.
By disengaging the screw 8 and rotating the thin plate tip 7 relative to the vehicle body, the retaining protrusion 12 is rotated to the position 12a shown by the dashed line in FIG. It is constructed and arranged such that in this position the retaining projection 12 is out of the active range of the corresponding projection 13, so that the spring leg 2 can be removed downwards without any hindrance.

Particularly, the advantage of the embodiments shown in FIGS. 4 to 6 is that if the retaining projection 12 and the corresponding projection 13 are pressed against each other when fixing the spring leg to the vehicle body 1, there will be an inconvenience to the vehicle body in the range of the vehicle body notch 21. This means that surface damage that can cause harmful effects can be avoided. On the other hand, in the case of a structure made entirely of metal, it is not always possible to completely avoid such surface damage.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and FIG. 1 is a longitudinal sectional view of a first embodiment of the vehicle body side support device according to the present invention;
2 is a plan view of a spring leg end with a support; FIG. 6 is a longitudinal sectional view of a second embodiment of the vehicle body support according to the invention; and FIG. 4 is a vehicle body support according to the invention. 5 is an enlarged view of a part of the embodiment of FIG. 4,
FIG. 6 is a plan view of the notch on the vehicle body side of the bearing device according to FIG. 5; 1... Vehicle body, 2... Spring leg, 3... Coil spring,
4... Giston rod, 5, 6... Rubber elastic member,
7... Support body, 8... Screw, 9... Through hole, 10
...bottom, 10a...shrinkage part, 11...edge, 1
2... Holding protrusion, 12a... Position, 13... Compatible protrusion, 14... Assembly sleeve, 15... Support member, 16... Spring plate, 17... Plastic cap, 18...・-Holding protrusion, 19...Fixing protrusion, 20・
...Flange, 21...Vehicle body notch

Claims (1)

[Claims] 1. It has a support that is applied from below to a vehicle body or a vehicle body component and is screwed to the vehicle body or a vehicle body component, and a spring leg or a piston of a spring shock absorber is attached to this support. The rod is supported in the axial direction by interposing a rubber elastic member,
Body-side support devices for motor vehicle spring legs or spring shock absorbers, in which: a) the support (7) is designed as a sheet-metal cup-shaped body (7) that is at least approximately rotationally symmetrical and open on the body side; The bottom of the thin plate cup-shaped body (10, 10a
) is attached to the piston rod (4) by inserting rubber elastic members (5, 6), and the upper edge (11) of the thin plate cup-shaped body is bent outward into a flange shape. (1), and b) the sheet cup-shaped body has at its end facing the vehicle body retaining projections (12) uniformly distributed and arranged in a circular shape; and c) a corresponding projection (13) adapted to the retaining projection (12) is arranged on the vehicle body (1) or on a component immovably connected thereto; and d) a corresponding projection (13) adapted to the retaining projection (12)
) and the corresponding protrusion (13) are appropriately selected in terms of their spatial arrangement and dimensional relationship with respect to each other, so that on the one hand, the thin cup-like body elastically presses the holding protrusion and the corresponding protrusion in the radial direction during assembly. , the axial holding force of the protrusions engaging with each other is such that they are moved axially towards the vehicle body until the edge (11) of the thin plate cup-shaped body abuts against the vehicle body, and the axial holding force of the projections engage with each other. (
2) in such a way that it is sufficient to freely suspend the pre-assembled sheet cup (7) as a component unit on the vehicle body (1), while on the other hand the sheet cup can be removed. 1. A support device on the vehicle body side of a spring leg or spring shock absorber of a motor vehicle, characterized in that it is configured to be removed from the vehicle body again in the axial direction by rotating relative to the vehicle body. 2. The outwardly bent edge of the thin cup-shaped body (1
1) is constructed as an upper spring plate for directly supporting the spring (3) of the spring foot or spring damper (2) on the vehicle body side independently of the piston rod (4). The bearing device described in Section 1. 3. An at least approximately rotationally symmetrical assembly sleeve (14) is fixed to the vehicle body (1), which projects into the interior of the thin plate cup (7) in the axial direction, and a corresponding projection (13)
is arranged along the outer periphery of the lower end of the assembly sleeve and the retaining projection (12) is arranged in the upper region of the lamella cup (7) along the inner periphery of the lamella cup (7). The bearing device according to paragraph 2 or paragraph 2. 4. A plastic cap (17) covering the inside of the thin plate cup-shaped body is attached to the end of the thin plate cup-shaped body facing the vehicle body (1), and the holding protrusion (12) is molded into the plastic cap (17). and in which the corresponding projection (13) is configured as a radially projecting spring tab in a body recess (21) arranged concentrically with respect to the piston rod (4). The bearing device according to paragraph 1 or paragraph 2. 5. The plastic cap (17) is configured in the shape of a truncated cone, the legs of the plastic cap are attached to the thin plate cup-shaped body (7), and the head of the plastic cap is provided with a clip-shaped holding protrusion (12). 4. The bearing device according to claim 3, wherein the vehicle body (1) has a frusto-conical molded portion adapted to the shape of the frusto-conical plastic cap.